NEW PLASMA DIAGNOSTICS USING RESONANCE LINES ON MCV PLASMA
The scientific goal of this proposal is to demonstrate the NEW plasma diagnostics of ``optically-thin'' thermal plasma using the ``optically-thick'' resonance photons, since the later carries the information on the plasma shape. The minimal goal is to demonstrate the anisotropic radiative transfer of resonance photons of Fe-K line in the accretion column by the spin-phase-resolved high-resolution spectra with 50 ksec observation of V834 Cen. The ideal goals is to perform the independent measurement of the density using the resonance lines in 10% accuracy and to detect the multi-temperature structure of the accretion column and constrain the plasma shape using atomic lines of O, Mg, Si, S, and Fe with 100 ksec observation.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '000159000' / Observation identification string OBJECT = 'V834_Cen' / Object name OBSERVER= 'XRISM Collaboration' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 212.2804 / [deg] Object Right ascension DEC_OBJ = -45.2878 / [deg] Object Declination RA_PNT = 212.259031743008 / Pointing RA DEC_PNT = -45.2886368507723 / Pointing DEC RA_NOM = 212.279776472093 / [deg] Nominal aspect point R.A. DEC_NOM = -45.2877463024747 / [deg] Nominal aspect point Dec. PA_NOM = 110.164403190855 / [deg] Nominal aspect point roll. TELAPSE = 311060.90625 / Elapsed time DATE-OBS= '2024-01-29T17:26:13.093750' / Start date DATE-END= '2024-02-02T07:50:34' / Stop date ONTIME = 137259.26863 / On-source time EXPOSURE= 137259.26863 / Exposure time PROCVER = '03.00.013.009' / Processing script version MKFFF = 'ISAS/JAXA' / Origin of First FITS file ORIGIN = 'GSFC/NASA' / Origin of Processed FITS file SOFTVER = 'Hea_21Aug2024_V6.34_XRISM_21Aug2024_V001' / Version of HEADAS used CALDBVER= 'gen20240315_xtd20240815_rsl20240815' / Version of CALDB used DATE = '2024-09-24T03:02:26' / Date and time this file was created or updated SIB2_VER= / SIB2 version JAXA